1 /*

     2  * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 

    27 package com.sun.java.swing.plaf.windows;

    28 

    29 import javax.swing.DefaultDesktopManager;

    30 import javax.swing.JInternalFrame;

    31 import javax.swing.JLayeredPane;

    32 import java.awt.Component;

    33 import java.awt.Container;

    34 import java.awt.Dimension;

    35 import java.beans.PropertyVetoException;

    36 import java.util.Vector;

    37 import java.lang.ref.WeakReference;

    38 

    39 /**

    40  * This class implements a DesktopManager which more closely follows

    41  * the MDI model than the DefaultDesktopManager.  Unlike the

    42  * DefaultDesktopManager policy, MDI requires that the selected

    43  * and activated child frames are the same, and that that frame

    44  * always be the top-most window.

    45  * <p>

    46  * The maximized state is managed by the DesktopManager with MDI,

    47  * instead of just being a property of the individual child frame.

    48  * This means that if the currently selected window is maximized

    49  * and another window is selected, that new window will be maximized.

    50  *

    51  * @see javax.swing.DefaultDesktopManager

    52  * @author Thomas Ball

    53  */

    54 @SuppressWarnings("serial") // JDK-implementation class

    55 public class WindowsDesktopManager extends DefaultDesktopManager

    56         implements java.io.Serializable, javax.swing.plaf.UIResource {

    57 

    58     /* The frame which is currently selected/activated.

    59      * We store this value to enforce MDI's single-selection model.

    60      */

    61     private WeakReference<JInternalFrame> currentFrameRef;

    62 

    63     public void activateFrame(JInternalFrame f) {

    64         JInternalFrame currentFrame = currentFrameRef != null ?

    65             currentFrameRef.get() : null;

    66         try {

    67             super.activateFrame(f);

    68             if (currentFrame != null && f != currentFrame) {

    69                 // If the current frame is maximized, transfer that

    70                 // attribute to the frame being activated.

    71                 if (!currentFrame.isClosed() && currentFrame.isMaximum() &&

    72                     (f.getClientProperty("JInternalFrame.frameType") !=

    73                     "optionDialog") ) {

    74                     //Special case.  If key binding was used to select next

    75                     //frame instead of minimizing the icon via the minimize

    76                     //icon.

    77                     if (!currentFrame.isIcon()) {

    78                         currentFrame.setMaximum(false);

    79                         if (f.isMaximizable()) {

    80                             if (!f.isMaximum()) {

    81                                 f.setMaximum(true);

    82                             } else if (f.isMaximum() && f.isIcon()) {

    83                                 f.setIcon(false);

    84                             } else {

    85                                 f.setMaximum(false);

    86                             }

    87                         }

    88                     }

    89                 }

    90                 if (currentFrame.isSelected()) {

    91                     currentFrame.setSelected(false);

    92                 }

    93             }

    94 

    95             if (!f.isSelected()) {

    96                 f.setSelected(true);

    97             }

    98         } catch (PropertyVetoException e) {}

    99         if (f != currentFrame) {

   100             currentFrameRef = new WeakReference<JInternalFrame>(f);

   101         }

   102     }

   103 

   104 }